modify

我们需要修改计划以降低成本。

We need to ___modify the plans to reduce costs.

科学家们正试图改良这种植物，使其对疾病更具抵抗力。

Scientists are trying to ___modify the plant to make it more resistant to disease.

我们需要修改营销策略以吸引更年轻的客户。

We need to ___modify the marketing strategy to attract younger customers.